<template>
  <div>
     <div class="search">
     <input v-model="keyword" type="text" class="search-input"
      placeholder="输入城市名或拼音">
   <div
      class="search-content"
      ref="search"
      v-show="keyword"
    >
      <ul>
        <li
          class="search-item border-bottom"
          v-for="item of list"
          :key="item.id"
          @click="handleCityClick(item.name)"
        >
          {{item.name}}
        </li>
        <li class="search-item border-bottom" v-show="hasNoData">
          没有找到匹配数据
        </li>
      </ul>
    </div>
  </div>
  </div>

</template>

<script>
import Bscroll from 'better-scroll';
export default {
  name: "CitySearch",
  props: {
    cities: Object
  },
  data() {
    return {
      keyword: "",
      list: [],
      timer: null
    };
  },
  methods:{
    handleCityClick(city){
      this.$store.commit('changeCity',city);
      this.$router.push('/');
    }
  },
  computed:{
    hasNoData (){
      return !this.list.length
    }
  },
  watch: {
    keyword() {
      if (this.timer) {
        clearTimeout(this.timer);
      }
      if (!this.keyword){
        this.list = []
        return
      }
      this.timer = setTimeout(() => {
        const result = [];
        for (let i in this.cities) {
          this.cities[i].forEach(element => {
            if (
              element.spell.indexOf(this.keyword) > -1 ||
              element.name.indexOf(this.keyword) > -1
            ) {
              result.push(element);
            }
          });
        }
        this.list = result;
      }, 100);
    }
  },
  mounted (){
      this.scroll = new Bscroll(this.$refs.search)
  }
};
</script>

<style scoped lang="stylus">
@import '~styles/varibles.styl';

.search {
  height: 0.72rem;
  padding: 0 0.1rem;
  background: $bgColor;

  .search-input {
    box-sizing: border-box;
    width: 100%;
    height: 0.62rem;
    padding: 0 0.1rem;
    line-height: 0.62rem;
    text-align: center;
    border-radius: 0.06rem;
    color: #666;
  }
}

.search-content {
  z-index: 1;
  overflow: hidden;
  position: absolute;
  top: 1.58rem;
  left: 0;
  right: 0;
  bottom: 0;
  background: #eee;

  .search-item {
    line-height: 0.62rem;
    padding-left: 0.2rem;
    background: #fff;
    color: #666;
  }
}
</style>
